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Memorandum from Fred Grubel to N. Herskovits [on pacemaker fund]
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Letter from W. H. Duehren to Adrian Kantrowitz
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Memorandum from David Grob to Fred Grubel [on purchase of internal pacemakers for implantation in patients]
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Memorandum from Fred Grubel to I. Langer [on purchase of pacemaker for indigent patients]
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Memorandum from Kenneth P. Liroff to Adrian Kantrowitz [on pacemaker study]
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Memorandum from Fred Grubel to N. Herskovits [on pacemaker fund]
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Letter from R. W. Hodgers, Jr to Adrian Kantrowitz
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Memorandum from Adrian Kantrowitz to Fred Grubel
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